What is the role of the rear sight on a firearm?

The rear sight plays a crucial role in accuracy when using a firearm. Its primary function is to assist the shooter in aligning the front sight with the target. Proper alignment of the sights is essential for precision shooting, as it allows the shooter to create a straight line from the shooter's eye through the rear sight, the front sight, and ultimately to the target. By using both the rear and front sights together, a shooter can ensure that their point of aim is aligned with the point of impact on the target, improving overall shooting performance.

The way the rear sight is designed can vary, but it typically includes features such as notch, aperture, or peep designs that help the shooter focus clearly on the front sight and the target simultaneously. This alignment is a fundamental skill in marksmanship training. Without a properly functioning rear sight and the ability to use it effectively, achieving accurate shots becomes significantly more challenging.